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by Giovanni
Mon Apr 12, 2021 6:57 pm
Forum: Bug Reports
Topic: STM32H7 ADCv4 patches Topic is solved
Replies: 11
Views: 1146

Re: STM32H7 ADCv4 patches Topic is solved

The interrupt should come from DMA, is the ADC actually reading samples in memory?

Anyway, please use the support forum for this kind of things, it is not yet a bug report.

Giovanni
by Giovanni
Mon Apr 12, 2021 6:59 am
Forum: Bug Reports
Topic: STM32L432, STM32L433 and STM32L443 HAL port issues
Replies: 7
Views: 965

Re: STM32L432, STM32L433 and STM32L443 HAL port issues

Hi,

This has been reported among other problems: viewtopic.php?f=35&t=5823

Giovanni
by Giovanni
Sun Apr 11, 2021 3:57 pm
Forum: Development and Feedback
Topic: [NOTES] Multi Core support
Replies: 30
Views: 7724

Re: [NOTES] Multi Core support

Hi, Just sharing some ideas about SMP/multicore support: Critical Sections Currently there is a single spinlock used for all kernel structures, it is encapsulated in chSysLock()/Unlock(). This means that using a critical zone always takes the spinlock affecting the other core. This is less than opti...
by Giovanni
Sun Apr 11, 2021 2:34 pm
Forum: Bug Reports
Topic: Checking validity of DMA channels in I2S LLD on devices with DMAMUX peripheral
Replies: 2
Views: 64

Re: Checking validity of DMA channels in I2S LLD on devices with DMAMUX peripheral

Hi,

Thanks for finding, could you post the modified file or a patch? (zipped or the forum would reject it)

Giovanni
by Giovanni
Sun Apr 11, 2021 10:57 am
Forum: Bug Reports
Topic: STM32L433 GPIOH pins disabled
Replies: 2
Views: 117

Re: STM32L433 GPIOH pins disabled

Xelus wrote:Should STM32L433 and STM32L432 potentially be split?

L433 has one extra i2c and also one extra spi peripheral compared to L432.


Probably yes.

Giovanni
by Giovanni
Fri Apr 09, 2021 5:21 pm
Forum: Development and Feedback
Topic: [NOTES] Multi Core support
Replies: 30
Views: 7724

Re: [NOTES] Multi Core support

Just a note, RT 7 in trunk is now SMP-able, it has been demonstrated on RP2040.

Giovanni
by Giovanni
Fri Apr 09, 2021 5:08 pm
Forum: Development and Feedback
Topic: Porting ChibiOS to ESP32
Replies: 8
Views: 905

Re: Porting ChibiOS to ESP32

The original poster went silent so it is safe to assume there has been no progress. A port is not out of question but we have finite bandwidth and there are other things ongoing. BTW, we recently ported RT to the dual core RP2040, the OS now is able to support SMP architectures, ESP32 would be a goo...
by Giovanni
Thu Apr 08, 2021 9:25 am
Forum: Small Change Requests
Topic: chprintf() show special values (float)
Replies: 6
Views: 186

Re: chprintf() show special values (float)

Math.h is not a problem, including an header does not increase code size in itself.

Doing any operation in double precision would increase code size because double precision code would be linked from math libraries.

Giovanni
by Giovanni
Wed Apr 07, 2021 3:15 pm
Forum: Small Change Requests
Topic: chprintf() show special values (float)
Replies: 6
Views: 186

Re: chprintf() show special values (float)

The above code does not look portable, it makes assumptions on the FP format being used.

Giovanni
by Giovanni
Wed Apr 07, 2021 1:47 pm
Forum: Small Change Requests
Topic: chprintf() show special values (float)
Replies: 6
Views: 186

Re: chprintf() show special values (float)

The issue would be bringing in 64-bits math from libraries on small targets, chprintf() is not meant to be fully compliant, FP support is already an "extra".

Giovanni

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